450 Pro Rc Helicopter Main Rotor Blade Holder

Metal main rotor holder x 2

Linkage ball A(M2.5x4) x 2(Φ4.75x13mm)

Bearing MR84ZZ x 4(Φ4xΦ8x3mm)

Socket collar screw x 2(M3x16mm)

M3 nut x 2